import my_utils.str_utils as wk
from my_utils import file_utils as wj
#print(my_utils.str_utils.str_reverse("我考啊啊"))
print(wk.substr("终极牛魔",0,2))
wj.print_file_info("f:/bli.txt")
wj.append_to_file("f:/akk.txt","zjnm")